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E. J. BOWMAN.

RADIATOR. ,7

APPLICATION FILED DEC-7,1917.

1,3 1 1,549. 4 Patented July 29, 1919.

4 SHEETS-SHEET 1- INVENTOR. E. J. BOw/vm/v E. J. BOWMAN.

RADIATOR.

APPLICATION FILED DEC. 1. I917.

1 3 1 1 549, Patented July 29, 1919.

, 4 SHEETS-SHEET 2.

c F" a w 3? 17 16 2 38 g INVENTOR: E11 BOWMAN A'rrarmEv'.

rm: COLUMBIA PLANOGRAPII cm. WASHINGTON. n. c.

E. 1. BOWMAN. RADIATOR.

I APPLICATION FILED DEC-7,1917. 1,31 1,549. Patented July 29,1919.

4 SHEETS-SHEET 3.

lNvENTom' E. J. BOWMAN.

RADIATOR.

APPLlCATlON FILED 050.7,1917.

Patented July 29, 1919.

4 SHEETS-*SHEET 4.

4 rmmvsw.

EDWIN JAMES BOWMAN, OF BIRMINGHAM, EMe n D, nssroivon or oivn-riimnfro PERGYWILLIAM WADE, or rRMINGrIA ENGLAND.

RADIATOR.

To all whom itmag concern: I 7 Be it known that I, 'EDWIN JAMns .Bow-

. MAN, subject of the King of Great Britain,

residing zit-257 W'arwickroad, Greet, Birmingham, in the county of Warwick, Eng land, have invented a new and useful Radiator; and I dohereby declare the following to be a full, clear, and exact description of the same. t

7 My invention comprises 1 improvements in radiators for use as heating, cooling, condensing orlike apparatus, more particularly radiators for use with internal combustion engines, and has for its object to provide an improved means ofsecuring the circulating tubes in the tanks, this method of securing the tubes obviating the necessity ofdismantling the radiator or the like for the purpose between the tubes and tanks.

:Fig. 3. is. a section-through the lowertan-k a A-A in Fig. 2.

Fig. 4. is a similar-section at B+Bin Fi -l-" 1 15. illustrates oneof the rubber members removed. K

. Fig. 6. is a partial front. elevation of a modified form of the invention in which simplefiatjtubes are used.

Fig; 7. is ai-sectional view through the lower tank at-CC in Fig.

' a Fig. 8.- is a-horizontal-section at -D"D% in Fig. 9. is a partial front elevation of-another IEOI'IIIljfLlZhB invention in whichthe main vertical tubular memberwoarries a series of horizontal tubesfor thev circulation .of-air. I i

-Fi-g. 10- is a section through the lower tank Fig. lll. isean': enlarged; sectional View of V Specification qr Letters'Patent.

Application'filed llecember 7, 1917. 1Seria1No.'-2OG,0 48.

Patented July 29, 19:19.

partof oneof the main tubular members removed.

12. is apartial front elevationof another formof the invention. 7 t

Fig. 13. is a sectional view through the lower tank'of FF in Fig. 12.

Fig. '14. illustrates one of the clamping members removed.

Fig. 15. isan enlarged sectional view of part of one of the vertical tubular members.

Fig IG-is a partial front elevation of another-modified form of the invention. Fig. 17 isa'sectional View of thelower tank at G G'in Fig. 16. V

Fig. .18. is-an enlarged section ofpart of one of the vertical tubular members.

In the form of the invention illustrated upon the'accompanying drawings at Figs. 15, the radiator comprises an uppertank IandalowentankfZ, these two tanks being connected together by vertical tubes 3 so as to enablethe water to circulatebetween the upper-and lower, tanks on the well-known thermo-siphon principle.

iThe upper :s-urfacet of the lower tank 2 is ,formedgto provide a series of parallel grooves5 of dovetail-section andhaving either a series; ofopenings as 6 or a single elongated opening extending for the full length-of theagroovjes. The lower surface member ofathexuppen tank is provided with similar rgroovels and: holes to those; provided in the lower tank. .j i

Within each of these grooves is placed arubb'er or equivalent resilient member as 7' illustrated at Fig-.5 @Which i of similar s'ection,and adapted to be inserted endwise into itsigroove. t In practice.the -rlowerzendsof a series of tubes are ,placedin one resilient member and the upper ends in another resilient member, these resilient menibersabeing thendn- ,serted endwiseinto groovesin the upper and -loWer tan -ks,1t-he one end ,ofthe 'grooves being open. to permit thisas shownbyFig. 4. Similarly the four tubes and two resilient member's maybe :all removed-ewlbloc if 'necessary fonrepairs.' r I. 7

-Asw ill be seen in'FigA, the-one end of the groove, is closed by an abutment 8,

while at the oppositeend a sliding abutment piece -19 .is provided within thegroove to enable .hthew resilient Pmember to be. comj to obstruct the open end of the groove when it is deslred to insert or remove one of pressed. Thenecessary compression'is ob-' tained by the screw 10 carriedby the member 11 which is pivoted at 12' to the tank in such manner that the member 11 and screw 10 maybe moved angularly so asnot the resilient members.

The tubes may or may not be provided with'gills as 13. V H

As will be seen, the-radiator is-built in parts, 2'. 6., rows of tubes carried by resilient members, and in the event of one. of the tubes being damaged the one row of tubes taking down the whole radiator for remay be removed, the damaged tube replaced and the resilient members and tubes re-lnserted, thereby avoiding the necessity of soldering as is now required with the radiators at present in use.

-At Figs. 6, 7 and'8 a modified form of radiator is shown in which flat tubes 15 V V are employed which extend right across the radiator, one tube 15 being employed instead of the four tubes shown by FigMl. In this construction a single elongated hole is made within the resilient member'and the neces sary compression is obtained by a sliding block 16 and screw 17, the screw 17 being' .main tubular member 20-which carries a series of horizontally disposed tubes 21 the extremities of which are preferably enlarged so as to fit closely against each other at the front and back, but leaving a space over the greater part 'of the length of the tubesthrough which the water may circulate as is common in the well-known honeycomb type of radiator. The upper'and lower extremities of the member 20 are provided with projections as 22 which may or may not be of elongated section and which fit within holes in the resilient member in the same way as the simple tubes previously described. The resilient members are then placed within the grooves and compressed around the parts 22, the compression being maintained by the key piece 23 which is inserted through an eyed member 24011 the tank, .the extremity of the member 23 fitting on the outside of a slidingblock 25 and serving to entirely close the end-of the groove;

In the form of the invention shown at Figs. 1215 the radiator is again built in sections each comprising three elongated parallel tubes 30 or three rows of small tubes secured to upper members 31 in'similar lower members, these upper and lower members having elongated projections 33 which 41 adapted to fit within-the rubber member fit within the rubber members in manner previously described. Intermediate between the tubes 30 are radiating members 34 bent to a zigzag form.

In this form of the invention grooves are not provided in the tanks, "but a loose member 36 shaped to fit over the resilient member is provided having a lug 37 at its extremity adjacent to a lug 38 on the tank, these two lugs being adapted to be brought together by a screw- 39 and thereby compress the resilient member betweenrthe part 36 and the surface of the tank.

Another form of the inventionis shown at Figs. 16-18 in which the radiator is' again built of sections comprising upper and lower members as 40 connected by a series of zigzag tubes 41 of elongated section horizontally, the member .40 having a projection in manner previously described. A;metal member 412 havingan elongated hole fits over the ends of the tubes and above the resilient members which are placed within grooves in the tanks. The one end 43 of the member 42 overlaps an abutment 44011 the tankwhile its other end carries a screw 45 which engages with a sliding member 46 within-the groove and serves to compress the resilient member around the tube to provide the water-tight connection.

,The grooves in the upper and lower surfaces of the tank may be conveniently made by bending the metal of the tank to the requisite section,or they maybe built up or otherwise formed as desired. Y Inpractice the rubber or otherresilient members would, of course, be made slightly longer than the length of the grooves, the excess being compressed into the grooves to provide the necessary" tight jointg This rubber member may be of any suitable section such as rectangular'or round, though a dovetail section .is referred, or two ormore sections or parts 0 rubber may be employed in each groove if so desired.

'WhatI claim then is r 1. In a radiator the combination of an upper tank; a lowertank; aresilie nt'mem ber independently mounted in each of said upperand' lower tanks and extending from backto frontthereof; a tube connectingu. said upper and lower tanks and having its extremities disposed within said resilient members; and means for individually and separately compressing said resilient'mem-' bers so as to establishv a water-tight joint between said tube and tanks. 7

Ina radiator the combination of an upper tank; a lower tank; a series of vertically disposed tubes connecting said upper and lower resilient members and disposed r in rows from back to'f ront' thereof; resilient members 1n each of said upper and lower tanks extending from back-to: front there- 1 30 of and each resilient member fitting around the ends of a row of tubes; and means for compressing said resilient members so'as to establish a water-tight joint between said tubes and tanks.

3. In a radiator the combination of an upper tank having a series of parallel grooves disposed across its under surface; a lower tank having a series of parallel grooves disposed across its upper surface; a resilient member in each of said grooves; a series of vertically disposed tubes connecting the upper and lower resilient members; and means for compressing said re- 7 silient members within the grooves so as to establish a water-tight joint between said tubes and tanks.

4. In a radiator the combination of an upper tank having a series of parallel grooves disposed across its under surface and being closed at one end and open at the other end; a lower tank having a series of parallel grooves disposed across its upper surface and being closed at one end and open at the other end; a resilient member in each of said grooves; a series of vertically disposed tubes connecting the upper and lower resilient members; and means for compressing said resilient members within the grooves so as to establish a water-tight joint between said tubes and tanks.

5. In a radiator the combination of an upper tank having a series of parallel Copies of this patent may be obtained for grooves disposed across its under surface and being closed at one end and open at the other end; a lower tank having a series of parallel grooves disposed across its upper surface and being closed at one end and open at the other end, a resilient member in each of said grooves; a series of vertically disposed tubes connecting the upper and lower resilient members; and screw means for compressing said resilient members within the grooves so as to establish a watertight joint between said tubes and tanks.

6. In a radiator the combination of an upper tank having a series of parallel grooves disposed across its under surface and being closed at one end and open at the other end, a lower tank having a series of parallel grooves disposed across its upper surface and being closed at one end and open at the other end; a resilient member in each of said grooves a series of vertically disposed tubes connecting the upper and lower resilient members; a series of pivoted members on said tanks one adjacent each groove; and a screw carried by each of said pivoted members and each serving to compress a resilient member within its groove so as to establish water-tight joints between said tubes and tanks.

In testimony whereof I have signed my name to this specification.

EDWIN JAMES BOWMAN.

five cents each, by addressing the Commissioner of Patents, Washington, D; G. 

